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Invalid schema for function: Codex tool schema error

Quick fix

The Codex client reports a tool schema validation error. No verifiable fix is available in the original issue yet; follow it for troubleshooting updates.

Symptom

Section titled “Symptom”
Error output
upstream_status: HTTP 400; cause: Invalid schema for function 'mcp__codex_app__automation_update': schema must have type 'object' and not have 'oneOf'/'anyOf'/'allOf'/'enum'/'const'/'not' at the top level.

Cause

Section titled “Cause”

The error indicates that the upstream rejected the schema for mcp__codex_app__automation_update with HTTP 400: the top-level type must be object, and the top level must not contain oneOf, anyOf, allOf, enum, const, or not. The original issue does not include the actual schema, so it is unclear which constraint was violated or which component generated the schema.

The reporter used cc-switch v3.20.0 on Windows. In the same report, the Codex extension in VSCode worked normally, while the Codex client consistently failed. Another user confirmed the same problem but provided no fix. The issue remains open, and the original post has no verifiable solution yet.

Fix

Section titled “Fix”

  1. The original issue has no verifiable fix yet, so it provides no basis for confirmed configuration changes or upgrade steps.

  2. Follow source issue #6918 for further troubleshooting and replies. The follow-up asking whether it has been resolved remains unanswered.

Affected Versions

Section titled “Affected Versions”
ToolCodex
Versioncc-switch v3.20.0（报告中的受影响版本）
PlatformsWindows

Source Issues

Section titled “Source Issues”

This page is distilled from 1 real issues

FAQ

Section titled “FAQ”
Has this been resolved?
The original issue has no verifiable fix yet. It remains open, and other users have confirmed the same problem, but no reply reports a successful fix.
Section titled “Related problems”
HTTP 401 Unauthorized - CC Switch AnthropicUpgrade cc-switch to a fixed build so it sends the x-api-key and anthropic-version headers Anthropic requires.2 issues mergedmessages[1]: missing field `content` (HTTP 400)Upgrade CC Switch to v3.20.4; the converter skips additional_tools carriers without content, preventing strict upstream services from returning 400.1 issues mergedUpstream HTTP 502 - CC Switch (Claude CodeCheck your local network proxy (Clash/ZeroTier) config and make sure it does not interfere with direct requests.2 issues merged

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